2026年8月4日，格陵兰西北部的彼得曼冰川崩解出一座面积约76.4平方公里、厚度可达150米的大型冰山 1。此次事件不仅是该冰川自2012年以来最大的浮冰损失，也是2020年以来北极地区规模最大的崩解事件 1。
这一冰体脱落事件由渥太华大学牵头的国际团队通过卫星长期监测记录，并由该校博士生亚当·加尔博（Adam Garbo）识别确认 1。欧洲航天局Sentinel-1卫星在8月3日已显示冰舌中线明显恶化，至协调世界时（UTC）8月4日20:00，新冰山完全从冰川东侧分离 1。科学家预计，未来还将有两块面积分别约为94平方公里和84平方公里的大型冰体从该冰川脱落 1。这三次崩解合计将移除约254平方公里的冰体，使该冰川的浮冰舌减少约22% 1。目前，加拿大环境与气候变化部正在监测冰山的移动，以评估其对船只和海上设施的风险 1。
On August 4, 2026, a large ice island measuring approximately 76.4 square kilometers and reaching up to 150 meters in thickness calved from the Petermann Glacier in northwestern Greenland 1. This event marks the glacier's largest loss of floating ice since 2012 and stands as the largest Arctic calving event since 2020 1. The calving was identified by Adam Garbo, a PhD student at the University of Ottawa, as part of long-term satellite monitoring conducted by an international team led by the university 1. Prior to the complete separation, the European Space Agency's Sentinel-1 satellite detected significant deterioration along the center of the glacier's ice tongue on August 3 1. By 20:00 UTC on August 4, the new iceberg had fully detached from the eastern side of the glacier 1.
Scientists anticipate that two additional large ice masses, estimated at 94 and 84 square kilometers respectively, will eventually break off from the glacier 1. Together, these three calving events will remove roughly 254 square kilometers of ice, which is projected to reduce the glacier's floating ice tongue by approximately 22 percent 1. Meanwhile, Environment and Climate Change Canada is tracking the drift of the iceberg to evaluate risks to shipping and offshore facilities 1.
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